1. Translation Translation (also known as slide) moves a shape by sliding it up, down, sideways or diagonally, without turning it or making it bigger or smaller.
The F-shaped object below has three images shown. Images 1, 2, and 3 are all translations of the object. y
Axial symmetry (also known as fl ip) produces a mirror image (refl ection) in which the corresponding points on the original shape and the mirror image are always the same distance from the mirror line (axis).
In the diagram below, Image 1 is the object under axial symmetry in the y-axis (green line) Image 2 is the object under axial symmetry in the x-axis (red line) y
Object
6 9
5 8
4 7
3 2 1
–9–8–7 –5–4 –3–2 –1 –6 –10 1 2 3 4 5 6 7 8 9
–2 –3
Image 2
–4 –7
–5 –8
–6 –9
x
Direction changed: The image is pointing in the opposite direction to the object.
Image 2
After translation
x
Object moved down and to the left
Before translation
Image 1
No change in direction: The image is pointing in the same direction as the object.